255756353620 has 24 divisors (see below), whose sum is σ = 539633793888. Its totient is φ = 101817693600.

The previous prime is 255756353551. The next prime is 255756353627. The reversal of 255756353620 is 26353657552.

It is a super-2 number, since 2×255756353620² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255756353627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30298666 + ... + 30307105.

It is an arithmetic number, because the mean of its divisors is an integer number (22484741412).

Almost surely, 2^255756353620 is an apocalyptic number.

255756353620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

255756353620 is an abundant number, since it is smaller than the sum of its proper divisors (283877440268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

255756353620 is a wasteful number, since it uses less digits than its factorization.

255756353620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60605991 (or 60605989 counting only the distinct ones).

The product of its (nonzero) digits is 5670000, while the sum is 49.

The spelling of 255756353620 in words is "two hundred fifty-five billion, seven hundred fifty-six million, three hundred fifty-three thousand, six hundred twenty".